Safety gas valve



C. FERRARI SAFETY GAS VALVE Aprii 12, 1927. 1,624,044

Filed May 20. 1926 z k E5929 2 -+fi 77-z4 V4 J I /4 i /2 i z l. 1 26 \gI: L I M w yENTOR BY I7 I v Angfl EY Patented Apr. 12, 1927.

UNITED STATES GLIMACO EEEEAnI, 0E NEWARK, NEW JERSEY.

SAFETY GAS VALVE.

Application filed May 20,

This invention relates to an' improved valve of the type that shuts offwhen the The invention is illustrated in the accom-' panying drawings inwhich Figure l is a side view'of a gas burner with the valve shown insection. Figure 2 is a section of the valve taken at right anglesthrough the center of Figure 1. Figure 3 is a top view of a constructionshown in Figure 1. Figure 4 is a side view of a piston used in thevalve. In order to illustrate the device, I show a gas burner 10connected by a pipe 11 with the casing 12 of the valve. Inthe casing isa piston .13 which has a stem i l extending through thetop of the valve.The valve 13 fits snugly in the casing and drops by gravity so that itcloses the outletv 15 of the valve, the casing 12, however, being longenough to allow the piston to open or uncover the outlet under theinfluence of gas under pressure. The gas inlet is provided with a pipe16 which I prefer to secure to the valve casing 12 by means of a gasket17 which has the opening 18 to supply gas to the under side of thepiston which H has a hollow portion 19 and thus aids in the initialmovement of the piston when it is released.

The bottom face 20 of the gasket 17, this tight fit beingan additionalassurance that gas will not escape around the piston into the outletpipe 15.

The piston is held down by reason of the stem 14 being held by a latch21 pivoted as at 22 and having a recess 23 in its heavier end, therecess receiving the end of the stem 14 which is pointed. Thelatch thusholds the piston down until it is released or tripped and I show atripping device comprising a lever 24: pivoted at 25, one end beingformed to provide a handle 26 which is yieldingly held in normalposition by the spring 27. On the front end is a nose 28 of the pistonfits on thetop 1926. Serial No. 110,334.

which is hooked so that it engages the finger 29 of the latch 21.

To prevent excess inward movement of the tripping device a suitable stop30 can be arranged thereon. When gas under oressure is attempting topass throughqthe valve it is held against such passage by the lock- 1ngof the piston by the latch. When it is to be released, the handle 26 ispushed in and this trips the latch by swinging its end out of the pathof the stem 14 and the piston then rises to the position shown in dottedoutline in Figure 2. v I

After such releasing the tripping device resumesits normal position andthe latch rests against the side of the stem 14. When the gas isshutoff, the piston descends by gravity, sliding past the end of thelatch, this usually being facilitated by notching the latch as at 31,and as soon as the piston has arrived at its lowest point, the latchdrops over it and is again in locking position.

I claim: e

A gas valve comprising a casing, a tapered inlet gasket at the bottom ofthe cas ing, the casing having an outlet at the side, i

a hollow piston fitting the. casing and extending over the outlet whenthepistou is down and also forming a tighttlt on the gasket, a stemonthe piston and extending through the top. of the casing, a leverpivoted to the side of the" casing aud having a handle on one end and anose on the other end, and a latch having a recess to receive the end ofthe stem to hold it down and having'a finger underthe nose of the leverto release the latch from the stem.

2. A gas valve comprising a casino. at tapered inlet gasket at thebottom of the casing,the casing having an outlet at the side,

down and also forming a tight fit on the gasket, a stem on the-pistonand extending through the top of the casing. a lever pivoted to the sideof the casing and having a handle on one end and a nose on the otherend, and a latch having a recess to receive the end of the stem to holdit down and having a finger under the nose of the lever to release thelatch from the stem, the end of the latch havmg a notch where it bearson the stem to hold the stem in aligned position and allow its freedescent.

In testimony whereof I afiix my signature.

CLIMACO FERRARI.

